Struct UidCache 

pub struct UidCache { /* private fields */ }

A small cache for UID-to-username lookups.

Each call to UidCache::get reads /etc/passwd at most once per distinct UID for the lifetime of the cache. Useful for tools that resolve a username column for every row in a process listing.

Implementations

impl UidCache

pub fn new() -> Self

Construct an empty cache.

pub fn get(&mut self, uid: u32) -> &str

Returns the username for the given UID, falling back to the numeric string representation if no entry is found in /etc/passwd. Subsequent calls with the same UID return the cached value without re-reading the file.

Trait Implementations

impl Default for UidCache

fn default() -> Self

Returns the “default value” for a type.